Sod-pulverizer



(No Model.) 3 Sheets-Sheet 1. A. H. RISTVEDT.

SOD PULVBRIZBR.

No. 366,879. Patented Jul 19, 1887.

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SOD PULVERIZER.

No. 366,879. Patented July 19, 1887.

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No. 366,879. Patented July 19, 1887.

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UNITED STATES PATENT OFFICE.

ANTON H. RISTVEDT, OF MILAN, MINNESOTA.

SOD-PULVERIZEF?.

SPECIFICATION forming part of Letters Patent No. 366,879, dated July 19, 1887.

Application filed April 5, 1887. Serial No. 233,730. (No model.)

To all whom it may concern:

Beit known that I, ANTON H. RISTVEDT, a citizen of the United States, and a resident of Milan, in the county ef Chippewa and State of Minnesota, have invented certain new and useful Improvements in Sod-Pulverizers; and I do hereby declare that the'following is a full, clear, and exact description of the invention, which will enableothers skilled in the art to which it appertains to make and use the same, ref erence being had to the accompanying drawings, which form a part of this specification, and in which- Figure I is a side elevation of my improved sod-pulverizer. Fig. 2 is a bottom plan view of the same. Fig. 3 is a central longitudinal vertical sectional view. Fig. 4 is a perspective detail View of a part of the series of cutter-blades and their attachments. Fig. 5 is a transverse vertical sectional View taken ou the line :c fr, Fig. l; and Figs. 6, 7, S, and 9 are detail views, the nature of which will be hereinafter specified.

The same letters of reference indicate corresponding parts in all the figures.

My invention consists in a new and improved sod-pulverizer, which will be hereinafter fully described and claimed.

Referring to the several parts by letter, A indicates the side pieces, and B the end pieces, of the upper part or section of the square or rectangular 'frame of my improved sodpul verizer, and A indicates the side pieces, land B the end pieces, of the lower half or section thereof, the said two frame sections being firmly connected together by the short uprights C C, and the various parts of the frame thus formed being firmly bolted together to make an exceedingly strong, iirm, and durable frame. The top of this frame is preferably covered over by the boards D, as shown, the said boards being removable on each side of the center of the machine to admit of ready access to the operative parts of the machine from the top. On the central cross-piece, E, of the frame is supported a spring-seat, F, for the driver, and beneath the upper side pieces, A, is supported in bearings G G the transverse axle II, on the downwardly bent or cranked ends I-I H of which are mounted the wheels I, which rotate on the said ends, and to the central part of this shaft or axle is rigidly secured the lower end of a handle or lever, J, which passes through a slot in the cover of the frame, and which moves along a curved piece, K, having a notch, K K2, near each end, with which a projection, J, on the side of the lever J, is adapted to engage; and it will be seen that when the lever is pushed forward until the projection J is caught in the forward notch, K, the shaft will be turned so as to bring the wheels I in contnet with the ground and raise the shovel-blades and cut ters out of cont-act with the ground, while by drawing the said lever back until its projection J engages with the rear K2, the axle will be turned so as to raise the wheels I out of contact with the ground, and thus allow shovelblades and cutters to enter the ground, as hereinafter fully described.

Across the lower side of the frame, at the front end thereof, extends in bearings L a shaft, M, on which are pivotally secured the upper end of a series of parallel knives or fiat blades, N, the lower longitudinal edges of which are beveled and sharpened, and between the blades on the shaft M are placed the sleeves O, which serve to space and hold the knifeblades at regular distances apart, the upper rear edges of the blades at about their centers fitting in a series of slots, I, in a wooden crossbar, I), and being held pivotallyT therein by a long pivot bolt or rod, Q, which extends longitudinally through the bar I and through transverse apertures N in the blades N, and to the transverse bars P are secured the lower ends of adjusting-bars R, which are formed near their upper ends with longitudinal slots R', through which pass bolts S on the frame of the machine, having tightening-nuts S on their threaded ends; and it will be seen that by means of this construction the bar l? may be raised and lowered and iirmly secured in its adjusted position, so as to thus adjust the depth to which the cutting-edges of the series of parallel blades N enter the ground.

To the rear of the series of blades N, near the middle of the machine-frame, is mounted and turns in bearings T a transverse shaft, U, on which are mounted a series of hubs, V, which lICO are formed with four or lmore equidistant curved arms,V,to which are bolted the shovelblades W, the series of hubs being arranged side by side-on their shaft in such a manner that the arms and blades of one hub lie on a line between the arms and blades of the hubs on each side of it, which will be readily understood by reference to the drawings. To the rear of this shovel-shaft U are journaled two shafts/X and Y, each shaft having a series of transverse apertures, A2 A3, -formed through it, the apertures A2 being at right angles to Y and intersecting the apertures A3, and in these apertures are secured the double pointed spikes or points B2, which are curved, beveled, and pointed at each end, and are formed on one side at their center with a recess or notch,

B3, so that when two of the teeth or spikes areplaced overlapping one another at right angles with their notched portions overlapping and fitting one within the other-the central overlapping point of the two teeth will be of the same thickness as the body of one tooth, as will be readily seen. The crossed teeth are firmly secured in the apertures A2 A3 by means ofthe plugs C?, and the shafts X and Y are at such a distance apart, or, rather, the distance between them is so little, that their teeth overlap at their points as they pass one another in revolving, as clearly shown in the plan View, Fig. 2, of the drawings. Thus it will be seen that any sods caught and carried around by the teeth of the rear shaft, Y, will be caught between the teeth of the said shaftV and the upwardly-moving teeth of the forward shaft, X, of the two, and will thus be effectually crushed and pulverized. The. wooden shafts X and Y are strengthened between their transverse apertures by encircling metal bands or hoops D,which thoroughly strengthen the said wooden shafts and preventtheir splitting.

E indicates the tongue,which is hinged, as shown, at its rear end to the lower front end piece of the machine-frame, and to the upper side of the tongue, near itsjnner end, is pivoted or hinged the forward lower end of aconnecting-rod, G2, which is formed at its upper rear end with a square hook, G3,which iits and slides in a longitudinal slot, H3, formed in the lower end of a lever, H, which is pivoted at one side of the said slotto the machine-frame, working through aslot, I3, in the covered top of the same, the lower end of the lever below its pivotal point working down close by the side of the central cross-piece of the machineframe to which it is pivoted, so that when the handle of the lever is raised and its lower end lowered the projecting hook end of the connecting-rod will bear and slide upon the upper edge of the central cross-piece, E, and the tongue will thus be raised tov sink the blades and cutters deeper into the ground.

In operation the wheels are lowered, so as to raise the cutters and shovels from contact with the ground while driving to' the field to pose set forth.

be cultivated, or from one part of a field to another when it is not desired to disturb the ground, and on reaching the field to be cultivated the wheels are raised in the manner -described and the shovels and cutters thus lowered into the ground. The series of parallel cutter-blades N are thenraised or lowered, in the manner described, to adjust them to the depth desired with reference', to the shovelblades and teeth of the other shafts, when by raising or lowering the tongue the depth of the entire set of cutters, blades, Ste., can be readily adj usted. 4

From the foregoing'description, taken in connection lwith the accompanying drawings, the construction, operation, and advantages of my invention will be readily understood. It will be seen that my invention is simple and strong in construction and exceedingly efficient in its operation. It will be seen that in operation, first, the numerous series of long, closely-set knives having the long sharpened edges, next the numerous series of shovelblades, which as here constructed and arranged are very numerous in number, and finally the two series of thickly-set teeth will pass over every foot of ground, and that every sod in the field will necessarily be thoroughly crushed and pulverized.

Having thus described my invention, what I claim, and desire to secure by Letters Patent lof the United States, is-

l. The combination,with the machine-frame, of the forward transverse shaft, the series of parallel blades pivotally secured thereon at their upper ends, the cross-bar having the series of transverse slots, the long pivot-rod, the

adjusting-bars formed with' the longitudinal slots, and the xed screws having the retaining-nuts, all substantially as set forth.

' 2. Thecombinatiomwith the machine-frame, of the adjustable series of parallel straight blades and the central shaft, the series of hubs mounted thereon and formed with theA radiating arms, and the shovel-blades secured to the said arms, substantially vas set forth.

3. Thecombination,withthemachine-frame, of the adjustable series of parallel straight blades, the central shaft having the series of shovel-blades mounted thereon, and the two parallel shafts having the series of transverse apertures and the teeth secured therein, substantially as set forth.

Irs:

4.. rihe combination, with thetongue hinged' square hook, substantially as and for the purv l5. The combination, with the machine-frame, of the adjustable series of parallel straight blades, the central shaft having the series of shovel-blades mounted thereon, lthe two 'parallel shafts having the series of transverse apertures and the teeth secured therein, the In testimony that I elimini the foregoing as my hinged or pivoted tongue, the pivoted handle own I have hereunto affixed my signature in or lever arranged as described and formed with presence of two Witnesses.

the longitudinal slot in its lower end, and the ANTON H. RISTVEDT. 5 connecting-rod formed et its upper end with Vitnesses:

the square hook, substantially as and for the JOHN A. KLonS'rAD,

purpose herein set forth. y O. K. OPJ'ORDEN. 

